Shanxi Guangyu Power Sources Co.,ltd is a professional mining cap lamp products and batteries manufacture with 13 years experiences in China. We can supply 500, 000 set LED battery for electric bicycle yearly , 100, 000LED mining cap lamp yearly, other power sources and so on. In addition to our original products, we can offer specified goods and accept OEM orders. Shanxi Guangyu Power Sources Co.,ltd is a the best manufacturer that you can trust in China.Our factory covers an area of 20, 000 square meters and currently employs about 300 skilled workers. In order to keep steps with world market, we keep developing new products every year. Technology is the most important factor to win a large market share; therefore, we are spending a number of funds in developing and introducing up-to-date technology. Meanwhile, we have been granted ISO9001 and other certificates.